Top arXiv Papers Today

what are the top papers on arxiv today

The top papers on arXiv today cover a diverse range of topics in science and technology. Here are some of the highlighted papers:

1. Dark Dimension and Decaying Dark Matter Gravitons: This paper explores the cosmology of the Dark Dimension scenario, considering perturbations in the linear regime. It proposes that the excitations of a tower of massive spin-2 KK gravitons, produced in the early universe and decaying to lighter KK gravitons, could be a natural candidate for dark matter【7†source】.

2. Discovery of a New Cataclysmic Variable System by TESS: An international team of astronomers reports the discovery of a new variable system using NASA's Transiting Exoplanet Survey Satellite (TESS). The discovery is noted for its rarity and contributes to our understanding of variable star systems【8†source】.

3. Large Language Models and Prompt Engineering for Biomedical Summarization: This paper discusses the use of GPT-3.5 and prompt engineering for biomedical query-focused multi-document summarization. The study achieved top results in the 2023 BioASQ Challenge, confirming the effectiveness of prompt engineering in biomedical contexts【9†source】【10†source】.

4. What Can Slime Mold Teach Us About the Universe?: A study submitted to The Astrophysical Journal, available on the arXiv preprint server, led by Farhanul Hasan, explores insights that can be gained from studying slime mold, with implications for understanding cosmic phenomena【11†source】【13†source】.

5. Breakthrough in 3D Modeling from 2D Images by Adobe Researchers: Adobe researchers have developed a method for creating 3D models from 2D images in a remarkably short time. Detailed in their paper "LRM: Large Reconstruction Model for Single Image to 3D," this could have significant impacts on industries like gaming, animation, and augmented reality【12†source】【14†source】.

6. Most Colorful View of Universe Combining Webb and Hubble: A paper published in Astronomy & Astrophysics discusses the combined efforts of the Webb and Hubble telescopes to create an unprecedentedly colorful view of the universe. This collaboration represents a significant advancement in astronomical imaging and observation【15†source】【16†source】.

These papers showcase the wide range of research being conducted and published in various fields, from cosmology and astrophysics to AI and computer vision.

download the first paper and provide a detailed summary

I have downloaded the paper titled "Dark Dimension and Decaying Dark Matter Gravitons" from arXiv. Here's a detailed summary of its contents:

Summary:

The paper, authored by Georges Obied, Cora Dvorkin, Eduardo Gonzalo, and Cumrun Vafa, explores the cosmology of the Dark Dimension scenario, particularly focusing on perturbations in the linear regime. In this context, the paper proposes a unique candidate for dark matter in our universe: the excitations of a tower of massive spin-2 KK (Kaluza-Klein) gravitons. These 'dark gravitons' are theorized to have been produced in the early universe and decay into lighter KK gravitons over the course of cosmological evolution.

A key aspect of this scenario is that the decay of these dark gravitons leads to a decrease in the average dark matter mass as the universe evolves. Additionally, the kinetic energy released during each decay imparts a 'kick velocity' to the dark matter particles. This velocity is significant because it results in a suppression of structure formation in the universe.

The authors utilize current observational data, including from the Cosmic Microwave Background (CMB) by Planck, Baryon Acoustic Oscillations (BAO), and cosmic shear measurements by KiDS-1000. From these data sets, they put a bound on the dark matter kick velocity today, which is less than 2.2 x 10^-4 times the speed of light at a 95% confidence level.

The findings lead to specific parameter space regions for the Dark Dimension scenario. The combination of experimental bounds from cosmology, astrophysics, and table-top experiments suggests a size range for the Dark Dimension, estimated to be approximately 1-10 micrometers.

The paper concludes that the Dark Dimension scenario is not only consistent with current observations but also offers signatures that could be verified by near-future experiments.

This research spans 26 pages and includes 5 figures, providing a comprehensive exploration of the Dark Dimension scenario in the context of cosmology and particle physics.

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